Dr. Wolfram Heumann _ December 18.1957
Botanisches Institut der

Technisthen Hochschule

Braunschweig

Humboldtstr.1.
Germany

Herrn Frofessor Dr.Joshua Lederberg
. Departement of Genetics
University of Wisconsin a

   
    
    
   

All our best wishes to Esther and you from Barbara,Irene and
me for a happy ¢ stmas.We hope you are very well and you -

- have a nice timéninthe last days from 1957.We remember. often
eto our Christmag d-Madison,the-difficulties “in the first

~ time in the forei

"art
' the. difficulties“with all” your kindly hélp.We;-hope we can
-give back“in return a small part of this,perhaps’if you visit
us coming-“back from the congress in Stockholm ‘August nextyear.
To ‘made the visit trom Braunschweig more attractive to you
I send you a book from Braunschweig and-I hope you enjoy this

 

-little Christmas gift. S . 7 -
- I has been announced my participation to the congress in
_ Stockholm and I: hope I cah meet: there-Esther and you in any
case. ae wo yon
- Cur return journey has been happy and comfortable.first we
made a look around in Chicago for 3 dayS.and in New York for
4 .days.Weenjoied the fascinating fluidum from these big towns.
Tha, ocean crossing in our modern ‘ship."Arosa Sky" with only
“' {+s 85 passengers has been quiet and convenient too.
ce j Coming back to Braunschweig Frofessor Bogen has had ex~
pected me very urgent,my substitute leaved behind same misordez
», @nd thus much work for me,so I could'nt “undertake my experi-
"mental work.Few days before this I have:taken a lecture dis-
cussing my work in your Lab.In the first half from 1958 I have
to perform my habilitation and I have to present to Professor
Bogen the habilitation paper til the mid of #ebruary.The inter-
“vening time isitnt.long enough to make new experiments.I hope
.. | can. repeat the critical recombination experiments impliing
the streptomycin resistant mutants.Thus the habilitation
paper should include a summary of the morphological-cytolo-
gical and the genetical work in the sexuality of star forming
bacteria.the paper should'nt bee published before communicatior
with you.If you make some experiments with B- I ask you to in-
form me concerning the course and the outcom and your wishes
concerning the publications.
I thank you unes more for the hospitality in your Lab.
With the best wishes for the New Year to Esther and you
although from Barbara and Irene
I am sincerely you

4 q
(Wo¥fram Heyfiann )

typ clecgle of

ae

mcountry and “how edsy. you made to overcome ~ 9" -